1. Aldana-Galván, I., Álvarez-Rebollar, J.L., Catana-Salazar, J.C., Jiménez-Salinas, M., Solís-Villarreal, E., Urrutia, J.: Minimizing the solid angle sum of orthogonal polyhedra and guarding them with $$\frac{\pi }{2}$$-edge guards. In: Proceedings of the 28th Canadian Conference on Computational Geometry, Vancouver, August 3-5, pp. 175–181 (2016)
2. Aldana-Galván, I., Álvarez-Rebollar, J.L., Catana-Salazar, J.C., Marín-Nevárez, N., Solís-Villarreal, E., Urrutia, J., Velarde, C.: Covering orthotrees with guards and beacons. In: In proceedings of XVII Spanish Meeting on Computational Geometry, Alicante, Spain, July 26–28, pp. 56–68 (2017)
3. Bae, S.W., Shin, C.S., Vigneron, A.E.: Tight bounds for beacon-based coverage in simple rectilinear polygons. To appear in Computational Geometry (2019). https://doi.org/10.1016/j.comgeo.2019.02.002
4. Benbernou, N.M., Demaine, E.D., Demaine, M.L., Kurdia, A., O’Rourke, J., Toussaint, G., Urrutia, J., Viglietta, G.: Edge-guarding orthogonal polyhedra. In: Proceedings of the 23rd Canadian Conference on Computational Geometry, Toronto, August 10–12, pp. 461–466 (2011)
5. Biro, M.: Beacon-based routing and guarding. Ph.D. thesis, State University of New York at Stony Brook (2013)